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Finding the Fourth Proportional to 66,178.98, 99,225.96 and 43,663.62

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Solution

The fourth proportional to 66,178.98, 99,225.96 and 43,663.62 is: 65,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,178.98 : 99,225.96 = 43,663.62 : x
  2. Step 2: Convert to fraction form
    66,178.98/99,225.96 = 43,663.62/x
  3. Step 3: Cross multiply
    66,178.98x = 99,225.96 × 43,663.62
  4. Step 4: Simplify right side
    66,178.98x = 4,332,564,611.58
  5. Step 5: Solve for x
    x = 4,332,564,611.58/66,178.98
  6. Step 6: Final answer
    x = 65,467.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.